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Purchased Loans - Deteriorated Loans (Details) - Purchased - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | $ 4,869 | $ 2,892 |
Recorded Investment With No Allowance | 3,961 | 5,672 |
Total Recorded Investment | 8,830 | 8,564 |
Unpaid Principal Balance With Allowance | 5,001 | 2,999 |
Unpaid Principal Balance With no Allowance | 4,579 | 6,204 |
Total Unpaid Principal Balance | 9,580 | 9,203 |
With Related Allowance | 537 | 107 |
With No Related Allowance | 0 | 0 |
Related Allowance | 537 | 107 |
Average Recorded Investment With Related Allowance | 4,810 | 2,943 |
Average Recorded Investment With No Related Allowance | 4,586 | 4,744 |
Average recorded investment in impaired loans | 9,396 | 7,687 | $ 6,594
Interest Income Recognized With Related Allowance | 75 | 65 |
Interest Income Recognized With No Related Allowance | 119 | 234 |
Interest Income, Total | 194 | 299 |
Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 78,611 | 87,484 |
Recorded Investment With No Allowance | 143,643 | 139,776 |
Total Recorded Investment | 222,254 | 227,260 |
Unpaid Principal Balance With Allowance | 82,605 | 92,483 |
Unpaid Principal Balance With no Allowance | 189,611 | 185,226 |
Total Unpaid Principal Balance | 272,216 | 277,709 |
With Related Allowance | 2,552 | 1,777 |
With No Related Allowance | 0 | 0 |
Related Allowance | 2,552 | 1,777 |
Average Recorded Investment With Related Allowance | 83,601 | 91,387 |
Average Recorded Investment With No Related Allowance | 129,366 | 161,785 |
Average recorded investment in impaired loans | 212,967 | 253,172 | 318,032
Interest Income Recognized With Related Allowance | 4,081 | 4,410 |
Interest Income Recognized With No Related Allowance | 6,003 | 8,459 | $ 14,532
Interest Income, Total | 10,084 | 12,869 |
Commercial, financial, agricultural |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 600 | 625 |
Recorded Investment With No Allowance | 11 | 74 |
Unpaid Principal Balance With Allowance | 658 | 678 |
Unpaid Principal Balance With no Allowance | 13 | 79 |
With Related Allowance | 173 | 52 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 614 | 618 |
Average Recorded Investment With No Related Allowance | 13 | 75 |
Interest Income Recognized With Related Allowance | 10 | 21 |
Interest Income Recognized With No Related Allowance | 1 | 3 |
Commercial, financial, agricultural | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 3,779 | 5,768 |
Recorded Investment With No Allowance | 25,364 | 9,547 |
Unpaid Principal Balance With Allowance | 4,071 | 6,004 |
Unpaid Principal Balance With no Allowance | 40,332 | 18,175 |
With Related Allowance | 161 | 312 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 4,276 | 5,672 |
Average Recorded Investment With No Related Allowance | 12,102 | 9,208 |
Interest Income Recognized With Related Allowance | 204 | 259 |
Interest Income Recognized With No Related Allowance | 669 | 989 |
Lease financing |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 0 | 0 |
Recorded Investment With No Allowance | 0 | 0 |
Unpaid Principal Balance With Allowance | 0 | 0 |
Unpaid Principal Balance With no Allowance | 0 | 0 |
With Related Allowance | 0 | 0 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 0 | 0 |
Average Recorded Investment With No Related Allowance | 0 | 0 |
Interest Income Recognized With Related Allowance | 0 | 0 |
Interest Income Recognized With No Related Allowance | 0 | 0 |
Lease financing | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 0 | 0 |
Recorded Investment With No Allowance | 0 | 0 |
Unpaid Principal Balance With Allowance | 0 | 0 |
Unpaid Principal Balance With no Allowance | 0 | 0 |
With Related Allowance | 0 | 0 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 0 | 0 |
Average Recorded Investment With No Related Allowance | 0 | 0 |
Interest Income Recognized With Related Allowance | 0 | 0 |
Interest Income Recognized With No Related Allowance | 0 | 0 |
Real estate – construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 576 | 0 |
Recorded Investment With No Allowance | 0 | 1,199 |
Unpaid Principal Balance With Allowance | 576 | 0 |
Unpaid Principal Balance With no Allowance | 0 | 1,207 |
With Related Allowance | 5 | 0 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 576 | 0 |
Average Recorded Investment With No Related Allowance | 0 | 318 |
Interest Income Recognized With Related Allowance | 6 | 0 |
Interest Income Recognized With No Related Allowance | 0 | 47 |
Real estate – construction | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 0 | 0 |
Recorded Investment With No Allowance | 0 | 0 |
Unpaid Principal Balance With Allowance | 0 | 0 |
Unpaid Principal Balance With no Allowance | 0 | 0 |
With Related Allowance | 0 | 0 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 0 | 0 |
Average Recorded Investment With No Related Allowance | 0 | 0 |
Interest Income Recognized With Related Allowance | 0 | 0 |
Interest Income Recognized With No Related Allowance | 0 | 0 |
Real estate – 1-4 family mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 1,381 | 1,385 |
Recorded Investment With No Allowance | 3,780 | 4,225 |
Unpaid Principal Balance With Allowance | 1,404 | 1,433 |
Unpaid Principal Balance With no Allowance | 4,383 | 4,740 |
With Related Allowance | 18 | 45 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 1,362 | 1,419 |
Average Recorded Investment With No Related Allowance | 4,407 | 4,161 |
Interest Income Recognized With Related Allowance | 18 | 18 |
Interest Income Recognized With No Related Allowance | 111 | 176 |
Real estate – 1-4 family mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 12,169 | 15,910 |
Recorded Investment With No Allowance | 36,074 | 38,059 |
Unpaid Principal Balance With Allowance | 12,601 | 16,752 |
Unpaid Principal Balance With no Allowance | 41,222 | 48,297 |
With Related Allowance | 488 | 572 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 12,894 | 16,837 |
Average Recorded Investment With No Related Allowance | 36,801 | 46,983 |
Interest Income Recognized With Related Allowance | 647 | 793 |
Interest Income Recognized With No Related Allowance | 1,647 | 1,993 |
Real estate – commercial mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 2,066 | 728 |
Recorded Investment With No Allowance | 146 | 165 |
Unpaid Principal Balance With Allowance | 2,116 | 733 |
Unpaid Principal Balance With no Allowance | 150 | 168 |
With Related Allowance | 338 | 6 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 2,011 | 751 |
Average Recorded Investment With No Related Allowance | 159 | 177 |
Interest Income Recognized With Related Allowance | 40 | 26 |
Interest Income Recognized With No Related Allowance | 7 | 8 |
Real estate – commercial mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 62,003 | 65,108 |
Recorded Investment With No Allowance | 78,435 | 91,230 |
Unpaid Principal Balance With Allowance | 65,273 | 69,029 |
Unpaid Principal Balance With no Allowance | 100,427 | 117,691 |
With Related Allowance | 1,901 | 892 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 65,756 | 68,168 |
Average Recorded Investment With No Related Allowance | 78,368 | 104,485 |
Interest Income Recognized With Related Allowance | 3,201 | 3,333 |
Interest Income Recognized With No Related Allowance | 3,578 | 5,431 |
Installment loans to individuals |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 246 | 154 |
Recorded Investment With No Allowance | 24 | 9 |
Unpaid Principal Balance With Allowance | 247 | 155 |
Unpaid Principal Balance With no Allowance | 33 | 10 |
With Related Allowance | 3 | 4 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 247 | 155 |
Average Recorded Investment With No Related Allowance | 7 | 13 |
Interest Income Recognized With Related Allowance | 1 | 0 |
Interest Income Recognized With No Related Allowance | 0 | 0 |
Installment loans to individuals | Receivables Acquired with Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Recorded Investment With Allowance | 660 | 698 |
Recorded Investment With No Allowance | 3,770 | 940 |
Unpaid Principal Balance With Allowance | 660 | 698 |
Unpaid Principal Balance With no Allowance | 7,630 | 1,063 |
With Related Allowance | 2 | 1 |
With No Related Allowance | 0 | 0 |
Average Recorded Investment With Related Allowance | 675 | 710 |
Average Recorded Investment With No Related Allowance | 2,095 | 1,109 |
Interest Income Recognized With Related Allowance | 29 | 25 |
Interest Income Recognized With No Related Allowance | $ 109 | $ 46 |

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